Canon 7D users, this one's for you!

[Nigel C]

I'm after some opinions here guys, and be as honest or critical as you like!

How does the 7D perform at the higher ISO levels? When does noticable graininess appear in photos?

Pros and cons of the camera? I rarely do any aviation photography, so if you've used one for 'everyday' type stuff (including using a flash with it), that would be useful.

I've currently got a 400D, but am looking to upgrade. The ISO performance is one area I'm keen to hear opinions on.

Cheers